Steam generator



July 10, 1934. J, E, MERGE 1,965,749

STEAM GENERATOR Ffiled Jan, 8, 1931 GK 7 8 7 I Patented July 10, 1934 UNITED STATES STEAM GENERATOR John E. Pierce, Houston, Tex., assignor to Elsie Ilbery, Houston, Tex.

Application January 8, 1931, Serial No. 507,377

9 Claims.

This invention relates to a novel type of steam generator.

One object of the invention is to provide a novel type of generator, or boiler, of such con- 1 5 struction as to promote the free rapid circulation features of construction, operation and arrangement of parts an example of which is given in this specification and illustrated in the accompanying drawing, wherein Figure 1 shows a side elevation of the generator, partly in section, and with the surrounding jacket removed and Figure 2 shows a horizontal sectional view taken on the line 2-2 of Figure 1.

Referring more particularly to the drawing, wherein like numerals of reference designate similar parts in each of the figures the numer- LIa1s 1, 1 designate the headers, which are of tubular form and which are spaced apart and connected at one end by the tubular water manifold 2, and at their other ends by the tubular steam dome 3. There are the tubular water legs 4, 4,

'30'Zcne on each side, spaced from the corresponding header and whose lower ends are closed and whose upper ends are. inwardly turned and connected into the respective headers above the water level thereof.

An inlet water line 5 enters the water manifold 2 and a steam line 6 leads out from the steam dome 3.

There are series of pairs of circulating, steam generating coils arranged one above the other,

40 each pair comprising the coils '7, 8. These coils may be spiralled about the headers, each coil being connected, at its inner end, into one header, and at its outer end into the corresponding leg 4 on the same side of the other header and the coils are inclined upwardly from their inner to their outer ends.

Beneath the coils there is a suitable burner 9. Water is admitted through the inlet pipe 5 into the manifold 2 and passes thence into the headers 1 and into the coils. The water level will be automatically controlled by means of any conventional type of controlling device selected and which may be associated with the inlet line 5 but which, being well known, has not been illustrated. The water level will be so regulated that at least one pair of the coils will be above said level and only steam will circulate through them.

The heat generated by the burner 9 will heat the coils, legs, and headers and the steam generated will move upwardly through said coils, as indicated by the arrows, forcing the water ahead from each header to the corresponding leg. As the water is thus displaced by the lower coils from the headers it will correspondingly rise in the legs and will flow back by gravity, through the coils above, into the headers. A constant circulation of the water will thus be kept up through the coils beneath the water lever and they will be prevented from becoming too hot and from being burned out. A quick generation of steam and consequent high pressure and rapid circulation conduces to this result and consequently longer circulating coils may be used, without injury from the heat, than can now be used in boilers, or steam generators, of conventional construction.

One, or more, of the pairs of coils should be located above the water level and the steam rising directly through the headers, and containing unvaporized particles of water, may pass through this pair of coils and be thoroughly vaporized. Likewise any water that may be condensed from the steam passing upwardly through the legs may be returned to said headers through said upper' coil or coils. The upper coils, above the water level, and the inwardly turned upper ends of the legs 4 are surrounded by the flame and/or hot air rising from the burner 9 and the wet, or partially vaporized, steam in them will be thoroughly vaporized before passing on into the steam dome 3 for delivery to the point of utilization through the outlet line 6.

The drawing and description disclose what is now considered to be a preferred form of the invention by way of illustration only, while the broad principle of the invention will be defined by the appended claims.

What I claim is:

1. A steam generator comprising a pair of tubular connected headers having an inlet water line and an outlet steam line, a pair of tubular water legs whose upper ends are connected into the corresponding headers, a series of coils around the headers, each coil being connected at one end, into one header and, at its other end, into one of said water legs.

2. A steam generator comprising a plurality of upright, tubular, headers having connecting upper and lower passageways, upright, tubular 1 water legs associated with the respective headers, a series of tubular coils around the headers and arranged one above the other, each coil having its inner end connected into one header and its outer end connected into the corresponding leg.

3. A steam generator comprising a plurality of upright, tubular, headers having connecting upper and lower passageways, upright, tubular water legs associated with the respective headers, a series of tubular coils around the headers and arranged one above the other, each coil having its inner end connected into one header and its outer end connected into the corresponding leg, each coil being upwardly inclined from its inner end to its outer end.

4. A steam generator comprising a plurality of upright headers, a water manifold connecting the lower ends of said headers, a steam dome connecting the upper ends of the headers, an inlet water line entering said manifold, a steam line leading from said steam dome, tubular, upright, water legs associated with said headers, the upper ends of said legs being connected into the corresponding headers, series of coils connecting the headers with the corresponding legs.

5. A steam generator comprising a plurality of upright headers, a water manifold connecting the lower ends of said headers, a steam dome connecting the upper ends of the headers, an inlet water line entering said manifold, a steam line leading from said steam dome, tubular, upright, water legs associated with said headers, the upper ends of said legs being connected into the corresponding headers, series of coils connecting the headers with the corresponding legs, said coils being inclined upwardly from the headers to said legs.

6. A steam generator comprising a plurality of upright headers, a water manifold connecting the lower ends of said headers, a steam dome connecting the upper ends of the headers, an inlet water line entering said manifold, a steam line leading from said steam dome, tubular, upright, water legs associated with said headers the upper ends of said legs being connected into the corresponding headers, series of coils connecting the headers with the corresponding legs, said coils being arranged in pairs the inner ends of the coils of each pair being connected into the respective headers and their outer ends being connected into the corresponding legs.

7. A steam generator comprising a plurality of upright headers, a water manifold connecting the lower ends of said headers, a steam dome con-- necting the upper ends of the headers, an inlet water line entering said manifold, a steam line leading from said steam dome, tubular, upright, water legs associated with said headers the upper ends of said legs being connected into the corresponding headers, series of coils connecting the headers with the corresponding legs, said coils being arranged in pairs, the inner ends of the coils of each pair being connected intothe respective headers and their outer ends being connected into the corresponding legs, each coil being inclined upwardly from its inner to its outer end.

8. A steam generator comprising a pair of tubular connected upright headers having an inlet water line and an outlet steam line, a pair of tubular Water legs connected, at one end, into the corresponding headers, a series of coils, each coil being connected at one end into one header, and at its other end into one. of said legs.

9. A steam generator comprising. a pair of tubular connected upright headers having an inlet water line and an outlet steam line, a pair of tubular water legs whose upper ends are connected into the corresponding headers, a series of coils, each coil being connected at one end into one of the headers and at its other end into one of said water legs.

JOHN E. PIERCE. 

